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urcrypt_ed_veri

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This commit is contained in:
Paul Driver 2020-07-31 17:30:09 -07:00
parent 98d2ad9f08
commit 542bd55dc2
4 changed files with 36 additions and 20 deletions
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2
pkg/urbit/jets/e/ed_shar.c
View File

@ -20,6 +20,8 @@
else {
c3_y pub_y[32], sek_y[32], shr_y[32];
memset(pub_y, 0, 32);
memset(sek_y, 0, 32);
u3r_bytes(0, 32, pub_y, pub);
u3r_bytes(0, 32, sek_y, sek);

42
pkg/urbit/jets/e/ed_veri.c
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@ -2,36 +2,38 @@
**
*/
#include "all.h"
#include <ed25519.h>
#include <urcrypt.h>
/* functions
*/
static u3_noun
static u3_atom
_cqee_veri(u3_noun s,
u3_noun m,
u3_noun pk)
{
c3_y sig_y[64];
c3_y pub_y[32];
c3_w ret;
c3_y* mes_y;
c3_w set_w, pek_w;
c3_w mesm_w = u3r_met(3, m);
if ( ((set_w = u3r_met(3, s)) > 64) ||
((pek_w = u3r_met(3, pk)) > 32) ) {
// hoon checks sizes, but weirdly and without crashes
return u3_none;
}
else {
c3_y sig_y[64], pub_y[32];
c3_w met_w = u3r_met(3, m);
c3_y* mes_y = u3a_malloc(met_w);
c3_o ret_o;
memset(sig_y, 0, 64);
memset(pub_y, 0, 32);
memset(sig_y, 0, 64);
memset(pub_y, 0, 32);
u3r_bytes(0, 64, sig_y, s);
u3r_bytes(0, 32, pub_y, pk);
u3r_bytes(0, met_w, mes_y, m);
mes_y = u3a_malloc(mesm_w);
u3r_bytes(0, 64, sig_y, s);
u3r_bytes(0, 32, pub_y, pk);
u3r_bytes(0, mesm_w, mes_y, m);
ret = ed25519_verify(sig_y, mes_y, mesm_w, pub_y) == 1 ? c3y : c3n;
u3a_free(mes_y);
return ret;
ret_o = urcrypt_ed_veri(mes_y, met_w, pub_y, sig_y) ? c3y : c3n;
u3a_free(mes_y);
return ret_o;
}
}
u3_noun

9
pkg/urcrypt/urcrypt.c
View File

@ -154,3 +154,12 @@ urcrypt_ed_sign(uint8_t *message,
ed25519_create_keypair(public, secret, seed);
ed25519_sign(out, message, length, public, secret);
}
bool
urcrypt_ed_veri(uint8_t *message, size_t length,
uint8_t public[32], uint8_t signature[64])
{
return ( ed25519_verify(signature, message, length, public) == 1 )
? true
: false;
}

3
pkg/urcrypt/urcrypt.h
View File

@ -2,6 +2,7 @@
#define URCRYPT_H
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <ed25519.h>
#include <ge-additions.h>
@ -25,4 +26,6 @@ void urcrypt_ed_sign(uint8_t *message,
uint8_t seed[32],
uint8_t out[64]);
bool urcrypt_ed_veri(uint8_t *message, size_t length,
uint8_t signature[64], uint8_t public[32]);
#endif